<div>student works!</div>
<div style="margin-top:20px">
    <button
        type="button"
        id='abc'
        class="btn-primary"
        (click)="dian($event)"
    >
        原始铵钮
    </button>
    <hr>
    <button
        type="button"
        id='but12334'
        class="btn-primary"
        (click)="dianSon($event)"
    >
        but12334
    </button>
</div>
